$$749.00Engine \ Cylinder Heads \ Chevy Big Block Aluminum Heads290-6056
TCH290-6056
FLOTEK 290-6056 Big Block Chevy 290cc/112cc Aluminum Cylinder Head, Hyd RollerAssembled, Hydraulic Roller Cams, Sold as Each
FLOTEK's medium sized 290cc oval port cylinder head with 112 combustion chamber is recommended for moderate street or street/strip big block Chevys with displacements up to 509 cubic inches, operating at or below 6500 RPM. Capable of flowing 367 CFM at 0.600 in. of lift; tested on Super Flow Bench 1020. It may be necessary to slightly ...
FLO-TEK

FLO-TEK

FLOTEK 290-6056 Big Block Chevy 290cc/112cc Aluminum Cylinder Head, Hyd Roller

Assembled, Hydraulic Roller Cams, Sold as Each

Item #: TCH290-6056

Mfg Part #: 290-6056

UPC #: 850134007402

Applies To Continental U.S. orders only

Specifications
Cylinder Head specifications
Cylinder Head Style
Assembled
Cylinder Head Material
Aluminum
Combustion Chamber Volume (cc)
112cc
CNC-Machined Combustion Chamber
No
Intake Runner Volume (cc)
290cc
Exhaust Runner Volume (cc)
135cc
CNC-Machined Intake Runner
No
CNC-Machined Exhaust Runner
No
Combustion Chamber Style
Heart Shaped
Intake Port Shape
Rectangular
Intake Port Location
Standard
Exhaust Port Shape
Oval
Exhaust Port Location
0.375 in. Raised
Spark Plug Style
Angled
Spark Plug Type
14mm Spark Plug, .750 Reach, 5/8 Hex
Intake Valves Included
Yes
Intake Valve Diameter (in)
2.250 in.
Intake Valve Angle
24/4 Degree
Exhaust Valves Included
Yes
Exhaust Valve Diameter (in)
1.880 in.
Exhaust Valve Angle
15/4 Degree
Valve Type
Stainless, Swirl-Polished
Valve Springs Included
Yes
Valve Spring Type
Dual
Maximum Valve Lift (in)
0.725 in.
Outside Diameter of Outer Spring (in)
1.550 in.
Damper Spring Included
Yes
Valve Spring Pressure Closed
290 lbs.
Valve Spring Pressure Open
625 lbs.
Retainers Included
Yes
Retainer Material
10 Degree Manley
Locks Included
Yes
Lock Style
10 Degree
Valve Stem Seals Included
Yes
Valve Stem Seal Style
Viton Positive Seals
Rocker Arm Studs Included
No
Rocker Arm Studs Size
N/A
Rocker Arms Included
No
Rocker Arm Nuts Included
No
Guideplates Included
No
Valve Cover Mounting Style
Perimeter bolt
Accessory Bolt Holes Drilled
Yes
Valve Guides Included
Yes
Intake Valve Guide Material
Manganese Bronze
Exhaust Valve Guide Material
Manganese Bronze
Valve Seats Machined
Yes
Valve Seat Machine Style
Multi Angeled
Valve Seat Material
Powder Metal
Steam Holes Drilled
N/A
Oiling Style
Through pushrod
Machined for O-Ring
No
Heat Crossover
N/A
Quantity
Sold individually
Notes
Will not work with stock stud location stud girdles.
Applications
Make
Chevrolet
Engine Family
Chevy big block Mark IV
Engine Size
6.5L/396-7.4L/454
Years
1966-1990
Engine Family 2
Chevy big block Gen V
Engine Size 2
7.4L/454
Years 2
1991-1995
Engine Family 3
Chevy big block Gen VI
Engine Size 3
7.4L/454
Years 3
1996-2000
General
Brand
FLO-TEK
Item #
TCH290-6056
Mfg Part #
290-6056
UPC
850134007402
Description
FLOTEK's medium sized 290cc oval port cylinder head with 112 combustion chamber is recommended for moderate street or street/strip big block Chevys with displacements up to 509 cubic inches, operating at or below 6500 RPM. Capable of flowing 367 CFM at 0.600 in. of lift; tested on Super Flow Bench 1020. It may be necessary to slightly clearance or modify the the piston due to our more efficient heart shaped combustion chamber design with some domed aftermarket pistons, most of the newer designed dome profiles will clear. FLOTEK recommends material be removed from the piston and not the cylinder head. Our combustion chamber shapes are very critical to flow and altering the cylinder head can unfavorably affect flow and power performance. It is the customer's responsibility to verify proper piston to head clearance. Heads are designed for 3/8? pushrods. Larger pushrods will not fit without clearance and is not recommended since some areas are very thin. FLOTEK recommends the use of .120 in. thick-wall pushrods.
  • Headers will bolt on in most applications. Some may have interference.
  • Recommendations: Hooker Super Comp Headers
  • Stock Bolt Spread
  • May be necessary to use lowered motor mounts
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